MathGroup Archive 2005

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Re: Legendre Polynomials

In evaluating Legendre (and other) polynomials and polynomial sums for 
large orders or arguments with an earlier version of Mathematica (maybe 
3 or 4?) I encountered what I took to be round-off errors when using 
real arguments, which disappeared when I limited myself to integer or 
rational arguments.

If I wanted to evaluate one of these functions for an argument of 1.001, 
I used 1001/1000 as the argument and the obvious errors went away.

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